STA3340 Series
Box-type Three-phase Current Transformers for protection

1.Features:

• Flexible in installation modes: either fixable on primary wire or bottom board;
• Three round through holes for primary wires in ‘?’ configuration;
• Output terminal is the standard socket with plug, easy to use;
• Box structure, encapsulated by plastic shell, perfect outline

2.Ambient Conditions

• Ambient temperature: -55...+55°C;
• Relative humid <90% при 40°C;
• Atmospheric pressure: 860~1060mbar (650~800mmHg approximately);

3.Rated of Operating Frequency: 20Hz~1kHz

4.Insulation Rating: Class A (80°C).

5.Safety features:

• Insulation resistance: >1000M? in normal condition;
• Insulation withstand voltages: 6000V 50Hz/1min.
• Fire retardancy: In conformity with UL94-Vo

6.Outline Drawing, Installation Dimention and Coil Diagram

• Outline Drawing, Installation Dimention and Coil Diagram

Remark: Provide with a plug along with each product. As to installation instruction, please see the following page.

• Coil Diagramm

• Installation instruction: Take four support legs (included in package along with the product), insert them into the sockets as shown in the right figure. The center distance between the mounting holes is 50.0x71.0; The diameter of the mounting hole for the support leg is ? 5.0, and then use M4 screw to fix the current transformer on the bottom board.

7.Typical Usage and Parameters: The parameters in the application as shown in the right figure are listed in table below.